A whale has a calf and a bacteria replicates through cloning. Both of these are examples of

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative

When ash and dust begin to settle on the ground, they eventually become compacted by

Easy 6th grade work! 100 points! i need fast! compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.